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The Ultimate Central Boiler Buying Guide: Find the Perfect Heating Solution for Your Home!

Central Boiler Buying GuideWhen it comes to heating our homes, having a reliable and efficient boiler is essential. A central boiler is a popular choice for many homeowners as it provides consistent heat throughout the house.

However, with so many options available in the market, choosing the right central boiler can be a daunting task. In this Central Boiler Buying Guide, we will walk you through everything you need to know to make an informed decision.

From understanding different types of boilers to considering important factors such as size and efficiency, we’ve got you covered. So, let’s dive in and find the perfect central boiler for your home!


Understanding Different Types of Boilers:

– Combi Boilers: These boilers serve both as a water heater and a central heating unit, providing hot water on demand. They are compact and space-efficient, making them ideal for smaller homes.

– System Boilers: System boilers work alongside a separate hot water storage tank and are suitable for larger homes with multiple bathrooms. – Regular Boilers: Also known as traditional or conventional boilers, they require a separate hot water cylinder and are suitable for larger homes with high hot water demand.

2. Consider the Size:

– Calculate Heat Load: Determine the size of your boiler based on the heat load of your home.

Factors such as the square footage, insulation, and number of rooms will affect the heat load. – Bigger is not Always Better: Avoid oversized boilers as they can result in energy wastage and higher operating costs.

An appropriately sized boiler ensures optimal efficiency and performance. 3.

Efficiency Matters:

– Energy Efficiency Ratings: Look for boilers with high AFUE (Annual Fuel Utilization Efficiency) ratings. The higher the rating, the more efficient the boiler, which translates to lower energy bills.

– Condensing Boilers: Consider condensing boilers that utilize the heat from flue gases to preheat cold water, increasing efficiency and reducing fuel consumption. 4.

Fuel Options:

– Gas Boilers: Natural gas is one of the most popular fuel options due to its affordability and availability in many areas. – Oil Boilers: Ideal for areas without access to natural gas, oil boilers are reliable and provide consistent heat.

– Electric Boilers: These boilers are suitable for homes without gas or oil connections but tend to have higher operating costs. 5.

Additional Features:

– Smart Thermostats: Pair your central boiler with a smart thermostat to control and optimize your heating system remotely, improving energy efficiency. – Noise Level: Consider the noise level of the boiler, especially if it will be installed near living areas.

Top 9 Boiler Brands

1. Worcester Bosch:

– Known for their high-quality products and excellent customer service.

– Offers a wide range of boilers to suit varying needs and budgets. 2.


– A well-established brand with a reputation for reliability and efficiency. – Offers a range of energy-efficient boilers, including combi, system, and regular boilers.

3. Ideal:

– Offers a variety of boilers that are known for their affordability and reliability.

– Energy-efficient models available with excellent warranties. 4.


– A trusted brand in the UK, with a wide range of boilers suitable for different types of homes. – Offers reliable and efficient heating solutions.

5. Viessmann:

– Known for their advanced technology and high-quality products.

– Offers a wide range of boilers with excellent energy efficiency ratings. 6.


– Offers a range of reliable and efficient boilers suitable for small to large homes. – Known for their compact and space-saving designs.

7. Glow-worm:

– A popular choice for budget-conscious homeowners.

– Offers a range of affordable boilers with good energy efficiency ratings. 8.


– Known for their innovative and energy-efficient boilers. – Offers a range of boilers suitable for different heating demands.

9. Grant:

– Specializes in oil-fired boilers, ideal for homes without access to natural gas.

– Known for their efficiency and reliability.


Choosing the right central boiler for your home is a significant investment. By understanding different types of boilers, considering factors such as size and efficiency, and exploring reputable brands, you can ensure optimal performance and energy efficiency.

Remember to consult with a professional heating engineer to assess your specific requirements and make an informed decision. Stay warm and cozy with the perfect central boiler for your home!to Navien Boilers

Navien is a trusted name in the heating industry, known for its innovative and high-quality products.

With a strong presence in the tankless water heater market and a wide range of boilers to choose from, Navien has become a leader in providing efficient heating solutions. In this article, we will explore Navien’s history, its presence in the North American market, and the various types of boilers it offers.

Navien as a leader in the tankless water heater market

Navien has positioned itself as a leader in the tankless water heater market, offering homeowners a reliable and energy-efficient alternative to traditional water heaters. Tankless water heaters, also known as on-demand water heaters, provide hot water instantly without the need for a storage tank.

Navien’s tankless water heaters are designed to supply hot water on demand, ensuring a continuous flow without any delay or loss of pressure. Navien’s history and presence in the North American market

Navien, a South Korean company, was established in 1978 and has since expanded its operations to become a global manufacturer of heating and water heating products.

In the early 2000s, Navien entered the North American market and quickly gained recognition for its innovative technology and high-performance products. Today, Navien continues to be a trusted brand in North America, offering a wide range of heating solutions to homeowners.

Navien’s heat-only and combination boilers

In addition to its tankless water heaters, Navien also offers a range of heat-only boilers and combination boilers. Heat-only boilers, also known as regular or conventional boilers, require a separate hot water cylinder to store and heat water.

These boilers are suitable for larger homes with high hot water demand. Combination boilers, on the other hand, serve both as a central heating unit and a water heater.

They provide hot water on demand without the need for a separate storage tank, making them ideal for smaller homes with limited space.

Navien Boiler Models and Features

Navien offers a variety of boiler series, each with its own features and benefits. Let’s take a closer look at some of the important aspects of Navien boilers.

Overview of Navien boiler series, efficiency, heat exchanger, range, and flow rate

Navien’s boiler series includes the NCB-E, NHB, NFC, and NFB, each designed to cater to different heating needs. These boilers boast high energy efficiency ratings to help homeowners reduce their energy consumption and lower their utility bills.

Navien boilers are equipped with a stainless steel heat exchanger, which enhances durability and improves the transfer of heat. This design also helps prevent corrosion and maintains boiler performance over time.

Navien boilers offer a wide range of heating outputs, allowing homeowners to choose a model that best suits their specific heating requirements. Additionally, Navien boilers provide an impressive flow rate, ensuring a consistent supply of hot water for showers, faucets, and appliances throughout the home.

Important features of Navien boilers

Navien boilers come packed with features that enhance their performance and convenience. Here are some of the key features that set Navien boilers apart:


Tankless Design: Navien boilers feature a tankless design, eliminating the need for a storage tank and providing hot water on demand. This ensures a continuous supply of hot water without any waiting time.

2. Condensing Technology: Navien boilers utilize condensing technology, which allows them to extract heat from flue gases and maximize energy efficiency.

This technology also helps reduce greenhouse gas emissions, making Navien boilers an environmentally friendly choice. 3.

Stainless Steel: Navien boilers are constructed with high-quality stainless steel, ensuring durability and resistance to corrosion. This helps extend the lifespan of the boiler and ensures optimal performance.

4. Zoned Systems: Navien boilers are compatible with zoned systems, allowing homeowners to divide their homes into different heating zones.

This enables precise temperature control and increases energy efficiency by only heating the areas that require warmth. 5.

Turn-Down Ratio: Navien boilers offer a high turn-down ratio, which means they can modulate their heating output to match the heating demand. This results in better energy efficiency and prevents energy wastage.

6. Cascading: For larger homes or commercial buildings, Navien boilers can be connected in a cascading system.

This setup allows multiple boilers to work together, providing higher heating outputs and improved reliability. 7.

Wi-Fi Capability: Some Navien boiler models offer Wi-Fi capability, allowing homeowners to control and monitor their heating system remotely. This adds convenience and flexibility to managing the boiler’s settings.

In conclusion, Navien has established itself as a leader in the heating industry, particularly in terms of tankless water heaters and boilers. With a strong presence in the North American market, Navien offers a range of heat-only and combination boilers that cater to various heating needs.

These boilers are equipped with innovative features such as tankless design, condensing technology, stainless steel construction, zoned systems, turn-down ratio, cascading capability, and Wi-Fi connectivity. By choosing Navien, homeowners can enjoy reliable, efficient, and convenient heating solutions for their homes.

NFB Series


NFB Series is a highly efficient and advanced line of boilers that combines cutting-edge technology with exceptional performance. With features such as patented “fire tube” heat exchangers and a non-metal drain pan, the

NFB Series sets a new standard in the world of boilers.

Let’s take a closer look at the key features and benefits of the

NFB Series. Overview of Navien’s NFB series


NFB Series is designed to meet the heating needs of both residential and light commercial applications.

It is available in four models: NFB-301, NFB-401, NFB-501, and NFB-601, offering a range of heating outputs to suit various requirements. The

NFB Series boilers are wall-hung, compact in size, and can be installed either as a single unit or in a cascade system for larger applications.

Patented “fire tube” heat exchangers

One of the standout features of the

NFB Series is the patented “fire tube” heat exchangers. Unlike traditional “water tube” heat exchangers, the “fire tube” design optimizes heat transfer and enhances the overall efficiency of the boiler.

This design increases the surface area in contact with the heat source, ensuring maximum heat transfer from the combustion gases to the water. As a result, the

NFB Series achieves impressive energy efficiency ratings, reducing energy consumption and lowering utility bills for homeowners.

The “fire tube” heat exchangers also contribute to the durability and reliability of the

NFB Series boilers. The stainless steel construction ensures resistance to corrosion and provides a long lifespan for the heat exchangers, maintaining optimal performance over time.

Additionally, the “fire tube” design minimizes the risk of limescale buildup, reducing the need for maintenance and extending the intervals between servicing.

Non-metal drain pan

Another innovative feature of the

NFB Series is the non-metal drain pan. This unique design ensures the boiler remains free from leaks and prevents potential water damage.

The non-metal drain pan is resistant to corrosion and eliminates the risk of rusting, which can compromise the integrity of traditional metal drain pans. By incorporating a non-metal drain pan, Navien prioritizes the longevity and reliability of their boilers, providing peace of mind to homeowners.

Ease of installation and maintenance


NFB Series is designed with ease of installation and maintenance in mind. The boilers are compact and lightweight, simplifying the installation process and saving space.

They come with a multi-ventilation system, offering versatile installation options, including direct vent, conventional flue, and twin-pipe installations. The user-friendly interface and intuitive controls make it convenient for homeowners to operate and program their boilers according to their heating preferences.

Navien Boiler Warranty

Navien is committed to providing quality and reliability to its customers. As such, their boilers come with comprehensive warranty coverage to ensure homeowners have peace of mind and protection for their investment.

Navien offers a standard warranty for their boilers, typically covering parts and labor for a specified period. The duration and coverage of the warranty may vary depending on the specific boiler model and region.

It is essential for homeowners to review the warranty terms and conditions provided by Navien, as they will outline the exact coverage and any maintenance requirements to maintain warranty validity. In addition to the standard warranty, Navien also offers extended warranty options.

These extended warranties provide additional coverage beyond the standard warranty period, giving homeowners an extra layer of protection and reassurance. To make the warranty process efficient and hassle-free, Navien has a dedicated customer service team that handles warranty claims and provides assistance when needed.

Homeowners are encouraged to register their new Navien boilers to activate the warranty and ensure prompt support if any issues arise.



NFB Series boilers, with their patented “fire tube” heat exchangers and non-metal drain pans, deliver exceptional performance, energy efficiency, and reliability. The

NFB Series offers a range of models to meet different heating demands, making them suitable for both residential and light commercial applications.

With ease of installation, user-friendly controls, and comprehensive warranty coverage, Navien ensures customer satisfaction and peace of mind. By choosing the

NFB Series, homeowners can enjoy efficient and consistent heating while benefiting from cutting-edge technology and superior craftsmanship.

Navien Boiler Prices

When considering purchasing a Navien boiler for your home, its important to have an understanding of the prices associated with different models. Navien offers a range of boilers to suit various heating needs, and the prices can vary depending on factors such as the model, additional features, and installation requirements.

In this section, we will explore Navien boiler prices, factors that influence price variation, installation costs, and provide tips for getting the best prices.

Boiler-only prices for different Navien models

Navien boiler prices typically range from $1,500 to $5,000, depending on the model and its features. The NCB-E series, which includes combination boilers, tends to be on the higher end of the price range, while the NFB series, which includes heat-only boilers, is generally more affordable.

It’s important to note that these prices are for the boiler unit itself and do not include installation costs, additional components, or accessories.

Factors influencing price variation

Several factors can contribute to the variation in Navien boiler prices:

1. Model and Features: Different boiler models have varying prices based on their size, capacity, efficiency, and additional features.

For example, boilers with higher heating outputs or advanced technology may come with a higher price tag. 2.

Shipping Costs: If you’re purchasing the boiler online, shipping costs can add to the overall price. Depending on your location and the seller’s shipping policies, this can vary.

3. Installation Requirements: Certain installations may require additional components such as venting materials, pumps, or expansion tanks, which can contribute to the overall cost.

Warning about internet sales and warranty coverage

While it may be tempting to find discounted prices for Navien boilers through online retailers or auction sites, it’s important to exercise caution. The warranty coverage for Navien boilers typically requires professional installation by an authorized installer.

Purchasing a boiler through unauthorized channels, such as internet sales, may void warranty coverage. It’s recommended to purchase Navien boilers from authorized sellers to ensure warranty protection and to have installation performed by a professional.

Installation cost factors and estimated range

In addition to the boiler price, it’s important to consider the cost of installation. Several factors can influence installation costs, including:


Complexity of Installation: The complexity of the installation, such as the need for additional components or modifications to existing systems, can increase the overall cost. 2.

Location: Installation costs can vary based on your geographical location and local labor rates. 3.

Existing Infrastructure: The condition of your current heating system and whether any modifications are required can impact installation costs. While the exact installation cost will depend on these factors, it’s estimated that installation costs for Navien boilers can range from $2,500 to $6,000.

It’s always recommended to obtain multiple estimates from qualified contractors to ensure you receive competitive pricing.

Tips for getting the best Navien boiler prices

To get the best prices for Navien boilers, consider the following tips:

1. Find Authorized Sellers: Purchase Navien boilers through authorized sellers to ensure genuine products and warranty coverage.

Navien provides a list of authorized sellers on their official website. 2.

Get Multiple Estimates: Obtain quotes from multiple qualified contractors to compare prices and ensure you receive competitive pricing for both the boiler and installation. 3.

Check for Rebates: Research local and federal rebate programs that may offer incentives for purchasing energy-efficient boilers. These rebates can help offset the overall cost of the boiler.

4. Negotiate with Contractors: Once you have obtained estimates, consider negotiating with contractors to see if any cost savings can be achieved.

While negotiation is not always possible, it’s worth exploring the option.


Understanding Navien boiler prices is crucial when considering a purchase for your home. The prices can vary based on factors such as the model, additional features, and installation requirements.

It’s important to purchase from authorized sellers to ensure warranty coverage and to have the boiler installed by professionals. Additionally, considering installation costs, obtaining multiple estimates, checking for rebates, and negotiating with contractors can help you obtain the best prices for Navien boilers.

By following these tips and understanding the associated costs, you can make an informed decision and find the right Navien boiler for your home heating needs. If you found this Navien Boiler Guide helpful, please consider sharing it with others who may benefit from the information using the share buttons provided.

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